CN116287889A - Manufacturing method of high-pressure casting aluminum alloy for battery tray - Google Patents
Manufacturing method of high-pressure casting aluminum alloy for battery tray Download PDFInfo
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- CN116287889A CN116287889A CN202310207750.5A CN202310207750A CN116287889A CN 116287889 A CN116287889 A CN 116287889A CN 202310207750 A CN202310207750 A CN 202310207750A CN 116287889 A CN116287889 A CN 116287889A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 73
- 238000005266 casting Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 40
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 17
- 239000010936 titanium Substances 0.000 claims abstract description 15
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 239000011572 manganese Substances 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 9
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 5
- 238000004512 die casting Methods 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 238000007670 refining Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910018182 Al—Cu Inorganic materials 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910018575 Al—Ti Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application discloses a method for manufacturing a high-pressure casting aluminum alloy for a battery tray, the high-pressure casting aluminum alloy free of heat treatment comprises the following components: 9.0 to 10.0 wt% silicon; 0.15 to 0.25 wt% iron; up to 0.1 wt% copper; up to 0.1 wt% zinc; up to 0.1% by weight of chromium; 0.3 to 0.6 wt% manganese; up to 0.01 wt% nickel; up to 0.15 wt% magnesium; 0.05-0.1 wt% zirconium; 0.1 to 0.2 wt% titanium; 0.01 to 0.03 weight percent strontium; 0.05-0.1 wt% vanadium; 0.01 to 0.15 weight percent of rare earth, 0.05 weight percent at most of single impurity element, and the balance of aluminum; wherein the sum of the weight percentages of Ti, V, zr and rare earth elements is greater than 0.26 and less than 0.4.
Description
Technical Field
The invention relates to the field of high-pressure casting aluminum alloy, in particular to a manufacturing method of high-pressure casting aluminum alloy for a battery tray.
Background
With the improvement of the current new energy market share, the situation that new types of electric vehicles are put into the market every year is over from the situation that certain fuel vehicle brands are in the same world, especially the popularization of integrated large castings, and the development efficiency and the production efficiency of new products are improved.
At present, a significant supply-shortage phenomenon occurs in a battery tray, and the yield of a new energy vehicle is increased suddenly, so that the demand burst of the energy storage battery tray is caused, the upstream capacity expansion speed is difficult to meet downstream orders, and downstream manufacturers actively search for developing new suppliers to support the expansion of the suppliers.
At present, battery box products can be divided into three types: steel aluminium box, integral die-casting aluminium box and aluminium section welding box; wherein the steel aluminum box body and the integrated die-casting aluminum box body are mainly oriented to A00-level vehicles and hybrid vehicles; the aluminum profile splice welding box body can fully cover the first generation CTP battery and the second generation CTP battery, and is mainly oriented to the second generation CTP product and the third generation CTP product at present.
And the steel aluminum box body and the aluminum profile splice welding box body new energy automobile battery tray are mainly welded by profiles, so that the efficiency is low, the cost is high, and the cost is reduced and the efficiency is improved under the condition that the welding is converted into high-pressure die casting. The existing integrated die-casting box body cannot meet the requirements on the material properties such as elongation and strength after die casting, so that the metal heat treatment process is needed after die casting. This results in an increase in manufacturing costs.
Disclosure of Invention
The invention relates to a high-pressure casting aluminum alloy for a battery tray, wherein the high-pressure casting aluminum alloy is in an as-cast state with a tensile yield limit Rp0.2 of >120MPa and a breaking elongation A of >10.0 percent and a tensile strength Rm of >240MPa, and can meet the mechanical performance requirement of the high-pressure casting of the battery tray at present, and particularly, the high-pressure casting aluminum alloy does not need to be treated by a metal heat treatment process, so that the manufacturing cost is reduced.
To achieve at least one of the above advantages, the present invention provides a high pressure cast aluminum alloy for a battery tray, the high pressure cast aluminum alloy for a battery tray comprising:
9.0 to 10.0 wt% silicon;
0.15 to 0.25 wt% iron;
up to 0.1 wt% copper;
up to 0.1 wt% zinc;
0.3 to 0.6 wt% manganese;
up to 0.1% by weight of chromium;
up to 0.15 wt% magnesium;
0.05 to 0.1 weight percent vanadium;
0.1 to 0.2 wt% titanium;
0.05 to 0.1 weight percent zirconium;
up to 0.01 wt% nickel;
0.01 to 0.15 weight percent of rare earth, 0.05 weight percent at most of single impurity element, and the balance of aluminum;
wherein the sum of the weight percentages of Ti, V, zr and rare earth elements is greater than 0.26 and less than 0.4.
According to an embodiment of the invention, the sum of the weight% of Ti, V, zr and rare earth elements is greater than 0.3 and less than 0.4.
According to an embodiment of the present invention, the rare earth element is implemented as at least one of lanthanum, cerium, and bait.
According to one embodiment of the invention, the high pressure casting aluminum alloy for the battery tray is added with 0.2 to 0.25 weight percent of iron, 0.45 to 0.5 weight percent of manganese and 0.06 to 0.08 weight percent of vanadium.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.01 to 0.03 wt% of strontium.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.08 wt% of chromium.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.1 to 0.15 wt% of magnesium.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.1 wt% copper.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.1 wt% zinc.
According to an embodiment of the present invention, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.08 wt% zirconium.
According to an embodiment of the invention, the heat treatment free high pressure cast aluminum alloy comprises at most 0.1 wt.% zinc.
Drawings
Fig. 1 shows: schematic of the effect of silicon content on 2mm x 6mm sample flowability.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
The high-pressure casting aluminum alloy for a battery tray includes:
9.0 to 10.0 wt% silicon;
0.15 to 0.25 wt% iron;
up to 0.1 wt% copper;
up to 0.1 wt% zinc;
0.3 to 0.6 wt% manganese;
up to 0.1% by weight of chromium;
up to 0.15 wt% magnesium;
0.05 to 0.1 weight percent vanadium;
0.1 to 0.2 wt% titanium;
0.05 to 0.1 weight percent zirconium;
up to 0.01 wt% nickel;
0.01 to 0.15 weight percent of rare earth, 0.05 weight percent of single impurity element at most, and the balance of aluminum.
In the high-pressure cast aluminum alloy, the proportion of silicon in the high-pressure cast aluminum alloy is 9.0-10.0 wt%, the die-casting aluminum alloy in the range belongs to hypoeutectic aluminum alloy, the die-casting aluminum alloy has excellent natural timeliness and good fluidity after die casting, the solidification shrinkage rate is low, the hot cracking tendency of castings is extremely small, and in particular, under the filling distance of 2m for a conventional battery tray, the filling effect is better, the demolding deformation amount is lower, and the cost of post-procedure correction can be effectively reduced.
The proportion of iron in the high-pressure cast aluminum alloy is 0.15 to 0.25 wt.%, in this range. In the conventional aluminum alloy needing no heat treatment, the iron content is required to be controlled below 0.15%, so that the problem that the needle-shaped iron phase is generated to influence the elongation percentage of the product is mainly solved, the purpose of controlling the iron content to be 0.15-0.25% by the high-pressure casting aluminum alloy is mainly to use more regenerated aluminum, and the total mass of a battery tray made of the high-pressure casting aluminum alloy is reduced, so that the energy consumption is effectively reduced, and the carbon emission is reduced.
It is worth mentioning that after 0.15-0.25% by weight of iron is added, the elongation is inevitably reduced, so that 0.3-0.6% by weight of manganese and 0.05-0.1% by weight of vanadium are added, manganese mainly acts between a die and a product to form a film in a high-pressure die-casting aluminum alloy, the die sticking in the die-casting process due to the affinity of aluminum and steel is avoided, and in addition, the manganese and iron form AlSiMnFe phases, so that the needle-like iron is avoided to influence the elongation of the product; after vanadium is added, the vanadium and the iron generate AlSiVFe phase, and excessive iron is consumed, so that the influence on the elongation of the product due to the increase of the iron content in the regenerated aluminum can be reduced to the greatest extent.
Preferably, 0.2 to 0.25% by weight of iron, 0.45 to 0.5% by weight of manganese and 0.06 to 0.08% by weight of vanadium are added.
It is worth mentioning that the addition of the rare earth element and zirconium can raise the recrystallization temperature of the alloy and obviously refine the grains.
Particularly, for the wall thickness position of the aluminum alloy cast by a large casting, the supercooling degree is reduced along with the increase of the temperature of a die in the die casting process, so that the aluminum matrix is larger in size and a needle-shaped iron phase appears. The rare earth element and zirconium can refine the size of the aluminum matrix, improve the appearance of the iron phase and improve the tensile strength, the elongation and the hardness of the product. However, the sum of the percentages by weight of Ti+V+Zr+rare earth elements is preferably greater than 0.26 and less than 0.4. If the sum is lower than 0.26, aluminum matrix refinement is not obvious when die casting parts with 4.0mm of oversized battery tray wall thickness. If the sum is too high, excessive refinement occurs, intergranular strengthening occurs, and the elongation is reduced. Preferably, the sum of the weight percentages of Ti+V+Zr+rare earth elements (La+Ce) is greater than 0.3 and less than 0.4.
It is particularly worth mentioning that the rare earth element is implemented as at least one of lanthanum, cerium, bait.
Likewise, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.08 wt% zirconium.
In addition, adding up to 0.15 wt% magnesium, up to 0.1 wt% copper, up to 0.01 wt% nickel, up to 0.1 wt% zinc can strengthen the high pressure cast aluminum alloy when making the high pressure cast aluminum alloy, thereby improving the tensile yield limit rp0.2 and tensile strength Rm of the high pressure cast aluminum alloy in the as-cast state.
Preferably, the high pressure cast aluminum alloy for battery trays includes 0.1 to 0.15 wt% magnesium.
Preferably, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.1 wt% copper.
Preferably, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.1 wt% zinc.
Preferably, the high pressure cast aluminum alloy for battery trays includes 0.05 to 0.08 wt% of chromium.
Titanium alloyThe proportion of the cast aluminum alloy is 0.1 to 0.2 weight percent, and the titanium and the aluminum produce ALTI 3 The effect of grain refinement can be achieved, but an increase in titanium content can cause the aluminum liquid to precipitate in a biased manner when at rest, and can reduce the fatigue strength of the product.
Preferably, the high-pressure casting aluminum alloy further comprises 0.01 to 0.03 weight percent of strontium. The added strontium can carry out modification treatment on the form of eutectic silicon, and the generation of coarse flaky silicon phases is avoided. In other words, after strontium is added, a fine rod-like eutectic silicon structure can be formed. Therefore, the mechanical properties of the cast product are greatly affected by the modified eutectic silicon, and particularly the fracture elongation is greatly improved.
According to another aspect of the present invention, there is provided a method of manufacturing a high pressure cast aluminum alloy, wherein the method of manufacturing a high pressure cast aluminum alloy includes:
s1, melting aluminum ingots, and controlling the temperature of aluminum liquid to be between 710 and 730 ℃;
wherein the aluminum liquid comprises the following components:
9.0 to 10.0 wt% silicon;
0.15 to 0.25 wt% iron;
up to 0.1 wt% copper;
up to 0.1 wt% zinc;
0.3 to 0.6 wt% manganese;
up to 0.1% by weight of chromium;
up to 0.15 wt% magnesium;
0.05 to 0.1 weight percent vanadium;
0.1 to 0.2 wt% titanium;
0.05 to 0.1 weight percent zirconium;
up to 0.01 wt% nickel;
0.01 to 0.15 weight percent of rare earth, at most 0.05 weight percent of single impurity element and the balance of aluminum, and melting the added components by heating aluminum liquid;
s2, pressing a sodium-free refining agent of the aluminum alloy into the aluminum alloy through a deaerator for refining, adding an aluminum-strontium intermediate alloy containing 0.01-0.03 wt% of strontium during refining, and refining for a preset time to remove gas in the aluminum liquid;
s3, detecting the gas content by a hydrogen detector, and when the gas content is below 0.15ml/100g, performing die casting by an aluminum alloy high-pressure casting device to form the high-pressure casting heat-treatment-free aluminum alloy.
Preferably, the method for manufacturing the high-pressure casting heat-treatment-free aluminum alloy comprises the following steps of:
s4, material preparation and furnace cleaning: preparing materials according to the proportion of alloy components, and cleaning the furnace after the materials are prepared.
Preferably, 0.01 to 0.03 wt% strontium is also added.
It is worth mentioning that the alloying elements are added in the form of pure alloys or master alloys.
For example, cu is added as an Al-Cu master alloy, si is added as elemental 553 Si, mg is added as a pure Mg ingot, mn is added as an Al-Mn master alloy, ti is added as an Al-Ti master alloy, cr is added as a master alloy, sr is added as an Sr master alloy, and rare earth elements such as lanthanum, cerium, and bait are added as a master alloy.
In melting aluminum ingot, after the surface of the pure aluminum ingot is clean, placing the pure aluminum ingot and 553 silicon into a resistance crucible for heating and smelting, and controlling the temperature of aluminum liquid between 710 ℃ and 730 ℃;
in addition to the master alloy: when the temperature of the aluminum liquid reaches 720 ℃, adding the dried Al-Cu intermediate alloy, magnesium ingots, al-Ti and other intermediate alloys into the aluminum liquid, heating the aluminum liquid to 740 ℃, and preserving the heat for 15 minutes to ensure that the added intermediate alloy is completely melted;
when the temperature of the aluminum liquid is reduced to 710-730 ℃ during refining, the sodium-free refining agent of the aluminum alloy is pressed into the aluminum alloy by a movable rotary degassing machine to refine, and the aluminum-strontium intermediate alloy is added during refining to refine for a preset time. Preferably 10-30 minutes, then slagging off and standing. If the mixture is kept stand for 1 hour, an online hydrogen meter is used for detecting the gas content after the mixture is kept stand, and when the gas content is below 0.15ml/100g, die casting is carried out, and if the gas content does not meet the requirement, the refining, modification and degassing process is continued.
And (3) die casting production verification:
1) Production equipment and auxiliary accessories: 280T force die casting machine, automatic soup feeder, mould temperature machine, brand vacuum machine, special inlet release agent for die casting structural part on the market, inlet particle beads, 4mm 80mm 250mm homemade test piece mould (figure 1), 50mm punch and melting cup;
2) And (3) die casting process control: the temperature of the die casting aluminum liquid is controlled between 680 and 690 ℃, the temperature of a die temperature machine is controlled between 160 and 170 ℃, the high-speed is controlled between 2.7 and 2.9m/S, the vacuum degree is controlled between 10 and 40mbar, and the pressurizing pressure is 65Mpa;
3) The following is the test performance of the die-casting test piece with different component proportions according to GBT228 standard test piece wire cutting, using a three-Si tensile machine and an inlet extensometer.
The aluminum alloys for high pressure casting of five examples were manufactured by the above manufacturing processes, respectively, and the properties thereof were examined, and the following table 1 is concrete.
TABLE 1
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Claims (10)
1. The manufacturing method of the high-pressure casting aluminum alloy for the battery tray is characterized by comprising the following steps of:
s1, melting aluminum ingots and components, and controlling the temperature of aluminum liquid to be between 710 and 730 ℃;
wherein the aluminum liquid comprises:
9.0 to 10.0 wt% silicon;
0.15 to 0.25 wt% iron;
up to 0.1 wt% copper;
up to 0.1 wt% zinc;
0.3 to 0.6 wt% manganese;
up to 0.1% by weight of chromium;
up to 0.15 wt% magnesium;
0.05 to 0.1 weight percent vanadium;
0.1 to 0.2 wt% titanium;
0.05 to 0.1 weight percent zirconium;
up to 0.01 wt% nickel;
0.01 to 0.15 weight percent of rare earth, at most 0.05 weight percent of single impurity element and the balance of aluminum, and melting the added components by heating aluminum liquid;
s2, pressing a sodium-free refining agent of the aluminum alloy into the aluminum alloy through a deaerator for refining, adding an aluminum-strontium intermediate alloy containing 0.01-0.03 wt% of strontium during refining, and refining for a preset time to remove gas in the aluminum liquid;
s3, detecting the gas content by a hydrogen detector, and when the gas content is below 0.15ml/100g, performing die casting by an aluminum alloy high-pressure casting device to form the high-pressure casting heat-treatment-free aluminum alloy.
Preferably, the method for manufacturing the high-pressure casting heat-treatment-free aluminum alloy comprises the following steps of:
s4, material preparation and furnace cleaning: preparing materials according to the proportion of alloy components, and cleaning the furnace after the materials are prepared.
2. The method of manufacturing a high pressure casting aluminum alloy for battery trays according to claim 1, wherein the sum of the weight percentages of Ti, V, zr, and rare earth elements is greater than 0.3 and less than 0.4.
3. The method of manufacturing a high-pressure casting aluminum alloy for battery trays according to claim 1, wherein the rare earth element is implemented as at least one of lanthanum, cerium, and bait.
4. The method for manufacturing a high-pressure casting aluminum alloy for battery trays according to claim 1, wherein 0.2 to 0.25% by weight of iron, 0.45 to 0.5% by weight of manganese and 0.06 to 0.08% by weight of vanadium are added to the high-pressure casting aluminum alloy for battery trays.
5. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.01 to 0.03 wt% of strontium.
6. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.05 to 0.08% by weight of chromium.
7. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.1 to 0.15 wt% magnesium.
8. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.05 to 0.1 wt% copper.
9. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.05 to 0.1 wt% zinc.
10. The method of manufacturing a high pressure cast aluminum alloy for battery trays according to claim 1, wherein the high pressure cast aluminum alloy for battery trays comprises 0.05 to 0.08 wt% zirconium.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133949A1 (en) * | 2003-07-10 | 2006-06-22 | Gerard Laslaz | Moulded AL-SI-CU aluminium alloy component with high hot-process resistance |
| JP2015514871A (en) * | 2012-04-17 | 2015-05-21 | ゲオルク フィッシャー ドルックグス ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＧｅｏｒｇ Ｆｉｓｃｈｅｒ Ｄｒｕｃｋｇｕｓｓ ＧｍｂＨ ＆ Ｃｏ ＫＧ | Aluminum alloy |
| CN110079712A (en) * | 2019-05-28 | 2019-08-02 | 清华大学 | As cast condition high-ductility diecasting aluminum-silicon alloy and its preparation method and application |
| CN113755722A (en) * | 2021-09-22 | 2021-12-07 | 隆达铝业（顺平）有限公司 | High-strength and high-toughness heat-treatment-free aluminum alloy material and preparation method thereof |
| CN113913653A (en) * | 2021-09-28 | 2022-01-11 | 一汽解放汽车有限公司 | Aluminum-silicon alloy, casting and preparation method thereof |
| CN114560019A (en) * | 2022-02-25 | 2022-05-31 | 蔚来汽车科技(安徽)有限公司 | Aluminum alloy and parts prepared by adopting same |
| CN115233017A (en) * | 2022-08-09 | 2022-10-25 | 帅翼驰新材料集团有限公司 | Method for manufacturing high-pressure cast aluminum alloy |
| CN115305392A (en) * | 2022-08-12 | 2022-11-08 | 清华大学 | High-strength and high-toughness die-casting aluminum-silicon alloy and preparation method and application thereof |
-
2023
- 2023-03-07 CN CN202310207750.5A patent/CN116287889A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060133949A1 (en) * | 2003-07-10 | 2006-06-22 | Gerard Laslaz | Moulded AL-SI-CU aluminium alloy component with high hot-process resistance |
| JP2015514871A (en) * | 2012-04-17 | 2015-05-21 | ゲオルク フィッシャー ドルックグス ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＧｅｏｒｇ Ｆｉｓｃｈｅｒ Ｄｒｕｃｋｇｕｓｓ ＧｍｂＨ ＆ Ｃｏ ＫＧ | Aluminum alloy |
| CN110079712A (en) * | 2019-05-28 | 2019-08-02 | 清华大学 | As cast condition high-ductility diecasting aluminum-silicon alloy and its preparation method and application |
| CN113755722A (en) * | 2021-09-22 | 2021-12-07 | 隆达铝业（顺平）有限公司 | High-strength and high-toughness heat-treatment-free aluminum alloy material and preparation method thereof |
| CN113913653A (en) * | 2021-09-28 | 2022-01-11 | 一汽解放汽车有限公司 | Aluminum-silicon alloy, casting and preparation method thereof |
| CN114560019A (en) * | 2022-02-25 | 2022-05-31 | 蔚来汽车科技(安徽)有限公司 | Aluminum alloy and parts prepared by adopting same |
| CN115233017A (en) * | 2022-08-09 | 2022-10-25 | 帅翼驰新材料集团有限公司 | Method for manufacturing high-pressure cast aluminum alloy |
| CN115305392A (en) * | 2022-08-12 | 2022-11-08 | 清华大学 | High-strength and high-toughness die-casting aluminum-silicon alloy and preparation method and application thereof |
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